package com.grf.hadoop.n_line_input_format;

import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Mapper;

import java.io.IOException;

public class NLineMapper extends Mapper<LongWritable,Text, Text,IntWritable> {

    private Text k = new Text();
    private IntWritable v = new IntWritable(1);

    @Override
    protected void map(LongWritable key, Text value, Context context)
            throws IOException, InterruptedException {
        String line = value.toString();
        String[] words = line.split(" ");
        for (String word:words) {
            k.set(word);
            context.write(k,v);
        }


    }
}
